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Finding the Fourth Proportional to 408,640.52, 563,604.39 and 265,446.69

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Solution

The fourth proportional to 408,640.52, 563,604.39 and 265,446.69 is: 366,108.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,640.52 : 563,604.39 = 265,446.69 : x
  2. Step 2: Convert to fraction form
    408,640.52/563,604.39 = 265,446.69/x
  3. Step 3: Cross multiply
    408,640.52x = 563,604.39 × 265,446.69
  4. Step 4: Simplify right side
    408,640.52x = 149,606,919,794.97
  5. Step 5: Solve for x
    x = 149,606,919,794.97/408,640.52
  6. Step 6: Final answer
    x = 366,108.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.